I need to separate text from value

I need to separate the output of fscanf

current_amp =

:MEASUREMENT:IMMED:VALUE 35.0E-12

and only retain the number.

I would like to have the output only give me 35.0E-12.

I looked into using regexp, but it also separates the number to 35 12.

If anyone has any advice it would be greatly appreciated.

Best

Umar

Answer 1

[Jos (10584)]

str = ':MEASUREMENT:IMMED:VALUE 35.0E-12'
value = sscanf(str,'%*s %f')

[Jos (10584)]

or perhaps you can use fscanf directly using the file identifier:

value = fscanf(fid,'%*s %f')

[Umar Twahir]

Thank you for the quick response. It seems it helps a bit but not all the way. I am reading data from an oscilloscope using:

fprintf(gpib2, 'MEASU:IMM:VAL?');

current_amp = fscanf(gpib2, '%g')

then I get:

current_amp =

:MEASUREMENT:IMMED:VALUE 38.0E-12

When I use your suggestion as:

str = 'current_amp'

value = sscanf(str,'%*s %f')

I get:

str =

current_amp

value =

       []

Is there any way to correct this?

Best

Umar

[Umar Twahir]

Jos

Actually I got it to work!! Thank you so much!!

I used your suggestion and got it. Thank you for your help!!!

[Jos (10584)]

Good to hear that. Solving a problem yourself is the best way to learn!